If your return has already been efiled and accepted, the only way to double check your checking and routing number is by viewing your printed forms. There is an area on the 1040 form that shows your routing and account number if it was entered.
You can find the direct deposit information in the Refund section of
- Form 1040, lines 76 b and 76d
- Form 1040a lines 48b and 48d
- Form 1040ez lines 13b and 13d
If you need a copy of your return, see this TurboTax FAQ link that explains how to print or download a copy for your records: